Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-05-12, 09:23 AM   #1
LocoCycle
Senior Member
Thread Starter
 
Join Date: Jan 2012
Location: Northern Cali
Bikes: 2010 Marin Lucas Valley
Posts: 80
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
typical crank sizing for a rider....

Hi all...hope all is well. I guess my education continues on cycling. I am about 5ft 11"...ride a flat bar road bike 19" frame or a 56cm frame. What is the typical crank sizing? I just learned that most sizes a 172.5, 175, and another smaller size like 168.

I am asking this because...I am looking to up grade my bike...I am about ready to buy a crankset that is a 175...my local bike shop says that crank size is to large for me.? But after reading and looking at some sizing charts on bicycle cranks...een found a calucator or two..so I was able to convert it to inches...it seems that I have been running a 175 size for sometime now without and problems.

Any suggestions for info or experiences with cranks being to long or to short?

Thanks for your time.
LocoCycle is offline   Reply With Quote
Old 11-05-12, 10:22 AM   #2
pdlamb
Senior Member
 
Join Date: Dec 2010
Location: northern Deep South
Bikes: Fuji Touring, Novara Randonee
Posts: 2,767
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 52 Post(s)
At 5'11", you can probably use any of the standard sizes: 175, 172.5, or 170 mm.

You might stop a bit and figure out if you tend more toward the "spinner" or "masher" end of the spectrum. If you're a masher, the 175 gives you an extra quarter inch of leverage. A spinner, you save that quarter inch to get extra leg speed. Not sure, split the difference, 1/8" toward each.

If you're obsessing over that 1/8", either you're OCD or know enough to make the decision without our inputs...
pdlamb is offline   Reply With Quote
Old 11-05-12, 10:25 AM   #3
10 Wheels
Galveston County Texas
 
10 Wheels's Avatar
 
Join Date: Nov 2007
Location: In The Wind
Bikes: 2010 Expedition, 03 GTO
Posts: 29,644
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 219 Post(s)
I have a cycling inseam of 34 Inches and prefer a 175 mm crank arms.

http://veloweb.ca/bike-fit/
__________________
[SIZE=1][B]What I like about Texas[/B]
http://www.youtube.com/watch?v=PGukLuXzH1E

Set F1re To The Ra1n ( NY Night Rain Ride)
http://www.youtube.com/watch?v=W7jfcWEkSrI
10 Wheels is offline   Reply With Quote
Old 11-05-12, 11:13 AM   #4
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,614
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
I recently talked to a fellow whose son and a friend are serious racers. Last winter they overhauled and reassembled their bikes together and in July they did it again. During the July maintenance session they discovered they had both been using mismatched crankarms for 6 months. Unless you're at the one of the leg length extremes, it probably won't make as much difference as you're thinking.
Retro Grouch is offline   Reply With Quote
Old 11-05-12, 11:34 AM   #5
LocoCycle
Senior Member
Thread Starter
 
Join Date: Jan 2012
Location: Northern Cali
Bikes: 2010 Marin Lucas Valley
Posts: 80
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
thanks for the replies guys. I guess I could be a little OCD.....just wanted to know what others thought. And since I am still kinda of new to cycling....and my education continues...asking for people opinions never hurts. Aprreciate everyone time.

Thanks
LocoCycle is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 02:57 PM.